Regulator for air-compressors.



Gn W EUNNEYMAN. BEGULATR FOR-MR GOMPRESSORS. APPLNMION mmm 1MM, 190e.

. Patented; Dea-15, w08.

3 SHEETS-SHEET 1.

G, W. HUNNBYM-AN.

REGULATOR FOR AR GOMPRBSSDRS.

APPLICATION FILED JAN. 9

Patented Dec. 15,1908

GEORGE w. rrUNNEYMAN, onlooncoan, NEWHAMPSHIRE.

nneunaron ron iunfcomrnnssons..

l Specification o Lettere Patent. l

Patented Dec. 15, 1908.

Application tied'anuary 9, 1908. Serial No..'409,986.

To all whom (it ma/y corwem:

Beit known that I, GEORGE W. HUNNEY- MAN, a citizen of the United States, residing at Concord, in the county of Merrimack, State of New Ham shire, have invented `certain new and usefu Im rovements in Re uators for Air-Compress rs; and I do here y declare the folio to bea fulhfclear, and exact description o the invention, such as will enable others skilled in the art to which it alppertains to make and use'the same. e-

present invention'has reference toregulators'for air compressors, and -it aims,

and cut-ofi cylinders o -the case are described in detail in the-iollownngv consideration thereof', their l and 3.

generally, to provide an exceedingly simple and effective automaticall operated' appa- Iatus of that nature whic is composed of but -few parts, is quick actingand highlyfsensitive, will shut 'o the' compressor at any pressure required by the adjusting weights,

and will control'such pressure by act-ing on either the inlet or the outletvalves of the compressor. y J More es ecially, however, the invention resides in tie particular constructinef the plunger and valve dis osed in the pressure the regulator; the particular means employed for connecting the lunger to the weighted'lever; andl in dbvices carried by the lever for regulating the variations of pressure in the air tank.

The above mentioned and other features which constitute the subject matter of-t'his specification, and will be understood frein a bodirnent being illustrated in the aecom- 'panying drawings, in which corresponding parts are designated b v similar reference ngi- .merals in the several views.

Of the said drawings t-Figure 1 is a front elevation of' the improved regulator at'tacliel to an air-com iressor. Fig. 2 is a horizontal section on the ine 2 -2 of Fig. 1 showing the posit-ion ,of the plunger and cut-oil valve when thc compressor 1s in operation. Fig. 3 is a section on the same line, showing the position of said members when the compressor is at rest.' Figs; 4`and 5 are cross-sections taken on the lines 4--4 and 5- 5 of Figs. 2 Fig. 6 is a )lan view of the plunger. Fig. 7 is a view similar to Fig. 1, showing the exhaust pi e from the valve cylinder connected to t 1e outlet valvcef the compressor.

preferred emcylinder, 2 the 'tank or receiver, and 3 the connecting pipe between the same. As any ordinary type of compressor and receiver may be used, an extended description of said parts is unnecessary.

The regulator, .which forms the subject of this case, comprises a pressure cylinder 4, and a valve or cutoii cylinder 5, disposed in juxtaposition to each other and connected in an?v referred manner. The main or pressure ey 1nder `4 carries a plate 6 by means of which it issecured to the compressor cylinder 1 has slidably fitted therein, aplunger 7 whose outer end islar flange 8a apted to contact with the adjacent end of the cylinder 4 when the plunger hasA reached the limit of its inward movement. inthe opposite end of said cylinder, is threaded a plug or bushin 9 throng i which anaxial .bore `10 is forme the bore being adapted to receive the branch 11 of a pipe 121, the ast-mentioned pipe communicating with the receiver 2.

rovided with an integral annu- 'The plunger 7, as shown in Fig. 2has "formed therein a longitudinal bore 13 which opens 'through the inner end thereof and terminates at its other end short of the outer end of the plunger, said bore communicating ad'acent its opposite ends with a air of annu ar channels 16 and .17, forme upon the periphery of the (plunger, such Acommunication. being efecte byimeans of ports 14 and '15 formed transversely of the plunger, the -ports opening at opposite ends throughthe ore and the channels. The lunger is further provided with a series of our peripheral channels 18, 19, 20 and 21, the rst two channels being connected by a cross channel 22, and the last two channels by a similar channel 23. The channels 18, 19, 20 andv 21 are formed between the channels 16 and 17 `which serve as inlet channels, and are likewise annular in shape.

In the normal position of the plunger, i'. e., at the limit of its inward movement, the channell -is disposed in alinement with a 4pair of registering ports 24 and 25, formed through the casins ofthe cylinders 4 and 5, while the channel 21 alnes in like manner with a pair of'registering ports 2G and 27.,

likewise formed through said easings. In,A

such position, the channel 2Q, which com; municates with the channel '21 alines with ort 28 formed through ,the casing ofthe ust-mentioned cylinder upon the opposite ports 24 guided in its movements by a screw 3]. Whose Y stem extends through an opening formed in' the casing of said cylinder andi-has` its free end projecting into a longitudinal roove 32 formed upon the adjacent side oft e valve. 'lfhc valve is further provided with a vertical channel 33 formed therethrough towards one end, and an exhaust openingtv formed in one side thereof, the channel 33Abeing adaptoutlet openings' 35 and 36 formed inthe upper and lower'walls of the casing ofthevalve of the cylinder, int-'0 which laSt.. mentioned openings extend the inner ends of up erjand.;

.Beings branch of a pipe 39, which communicates' with the upper' section'of the'ppe 12i`a`1id, in.

consequence, with the receiver2. ."'The openingl in the valve is nlike mannerjadapted..

to register with an eXhaust- 'o "suing-4 0 -formed in the side of the'casing"o 1 der 5.? f

The lunger is maintained normally latthe limito its inward movement by means of an angle'lever-iLthe vertical arm"of 'wl'1ich is connected by the flanged outerv end 'of 'the and (plunger bein erre lever has pivoted to its free end a weight car-v I plunger, the pin 'connected in any pre;-

is' m such (position, and sucie'nt' Wei have been 'sposed upon Ithe rod 45 to ala ance the required pressure, f inI 'the'4 freceiirer, Y the air entering the pressure cylinder throu` h the bore of the plug 9 will passlthrought e bore 13 of the plunger and he'exhausted into` the valve cylinder through-the ort 14,' the channel 16, and the 'ports 24 an y25, the air pressure within the valve cylinder, forcing the valve rearwardly, so as to bring the c han. nel 33 out alincinent withjthe'openings@5 v and 36,- exc'essive pressu'rewithiii the valve prevented hy the registrationl of the exhaust openings 34 and 40. 'Wham however, Ythe pressure within therrecelver reaches an excessive point, the pressure of the air within .the cylinder-'4, will force the" plunger outwardly against the action of the' weight, thus bringingthe" inlet channel'17 into registration with theports 26 and 27; and the channels 18 and 19 into registration with the ports 24 and 25, and 48, the last mcntioncxi port being foi-ined, in the sii of the cyiinder 4 adjacent the port The manner. '1 e horizontal arm `o'f. 'sa id V ment exhaustin thel air in the forward end of the valve cy and 2 5,the channels 18 and 19,and the port 48,. andfat the same time, aiining the channel 33 with the openings `35 and 86, whereupon the lair is free' to iiow throughthe pi es 39 and 37A andtheppe 38 to the inlet va ve -49 valve from its seat and vinstantly stopping v thecompressor. Upon the consequent de' ed to register during the'movement of the vaive with diametrically opposite inlet-and .f'erease ofthepressure within the receiver, the l plunger 'is returned toits normal position-by ,the actionfof thel weightedlever, so'A as to .bring-...the channel'l againinto registration municatio'n. between. the pipes-37' *and 538,

pressorto start. 'l

In the construction shown inirFigi-T.' theAV position of thevalve'BO withinits cylinder is and4 38fsected by the registration of the channel 33 therewith.-y the ,last mentioned der, whichvalve is thus held .against its seat,

same. The bolt is retained in ad] usted posi-l tion byl a lock nut 53.

the plunger eiccting that' of the valve which in turn, opens or cuts out communication hetween its cyhnder and thc compressor cylin- 'nder through the ports 24 of the compressor cylinder 1, raising saidl until the. .movement of the (valve 30-consefquent upon the rying rod 45 u on which the weights 46 lare supported. T e lever is carried 'by Aan L- shaped bracket 47 to' whichitsshorter arm is.

pivoted, said-'hracketfbeing'secured to 'theI casing of the cylinders. .When theplu'n" erl t,

, in consequence., with the receiver.'- fj r airis thus free to flow into the valve cylinder through the ports 26 and 27 so as to effect a forward movement of the valve, such move- .with thekp9rts- 2.4.. and; 25 f whereupon, the -valveis movedrearwardly.. y'the re'ssure-or'v the air owinglintothe valve cy inder, the ymovement ofthe valve. euttingzouti'the coin- "1 uwhereupom the compressor-.- valve'fisjreez. to return to itsseat, thus permitting 'ih econ'if f" i ""f'eo reversed, so.l that inthe normal position' ofthe. 1valve,,comfmimication between' the pipes 37 l p pe communicating in such instance with; ;the ontle t valve 50. of the compressor.I cylin-` cxeessivcpressure in the. re-

the levelrl `is proa Ithreaded verticaly `o'peningiformed l'l'O ingflocated directly beneath'the bracket 17,A

so that upon 'the adjustment ofthe bolt its.- free upper end will `a preach orrecede from .the"lowe r face of sai bracket. It is-theref ore possibletoaccurately regulate the" eX-.-

tentof theoutward movement of the plunger f .iw .iriasnuc'li's'such.'Increment wllderese'as--., "the-'bli" is moved towards the bracket 'and T. f" increase when vit .is moved away from they, '120 It will be apparent from the foregoind that -f the regulator 1s operated automatically bythe pressure of the air within the plunger gnb; main 'pressure cylinder 4, the movement of soa-oca is shown in the drawings, the invention is not intended to be limited to the exact details of construction illustrated, as modifications and changes may obviously be made within the sco e ot the appended claims.

\/ at is claimed is: A,

1. The combination, with a compressor and a. receiver connected together, said confipressor being 'provided with an air-inlet valve, of a regulator comprising a pair of juxtaposed cylinders having a pair of port communications with eachother, one of said cylinders being formed with'` diainetricallyopposite openings; an inlet pipe havin one end fitted in one oi said openings an the other end communicating with the recciver;

an exhaust pipe having one end fitted in the other opening and the other end communieating with said inlet valve for operating the same; a valve slidable within said cylinder and formed with a transverse channel movable into and out of registration with said openings during the movi-ments of the valve.

to open and cut out communication between the .inlet and exhaust pipes, a plunger slidable within the other cylinder and arranged to o en and close said ports; means for normal y holding the plun'fer at the limit of its inward movement; amian inlet pipe having one end communicating with the receiver and the other end with the interior of the lastmentioncd cylinder.

2. The combination, with a compressor and a-receivcr connected together, said compressor beingA provided with an air-inlet valve,v of' a regulator comprising a pair of juxtaposed cylinders having a pair .of port communications with each other, one of said cylinders boing formed with diametricallyopposite openings; an inlet pipc having one end iitted in one of said openings and the other end communicating with thc receiver; an exhaust pipe having one end fitted in the other opening and the other end communieating with said inlet valve, for operating the saine; a valve slidablerwithin said cylinder and formed with a transverse channel movable into and out of registration with said openings during the movements of the valve, to open and-cut ont communication between the inlet and exhaust pipes; a plunger slidable within the other cylinder and formed with a longitudinal bore and with a pair of spar-.ed channels communicating therewith and movable alternately into and ou't of alincmcnt with the adj acont port during the movements of the plunger; means lor normally holding the plunger' at the limit of its inward movement.; und an inlct-pipc ha ving one end communicating with the rccciverand thi` other end with the bore ol' said plunger.

I. 'l`hc combination, with a compressor and'a receiver conncctcd together, said coniprcssor being provided with an nirinlet valve, ol` a rcgulator comprising a pair of juxtaposed cylinders having a pair ci port communications with each other, one of said cylinders being formed with a pair of diametrically-Yopposite inlet and exhaust openings, and the other cylinder with a pair of' exhaust openings; an inlet pipe having one end fitted in the inlet opening in the first named cylinder and the other end communicating with the receiver an exhaust pipe having one` end fitted in the exhaust opening in said first named cylinder andthe other end communicating with said inlet valve, for o erating the same; a valve slidable within sai( first named cylinder and formed with a transverse channel movable int-o' and out of registration with said openings during the movements of the valve, to open and out out communication between the inlet and exhaust pipe; a plunger siidable withinthe second named cylinder and formed with a lon itudinal here and with two sets of circuinscri inv channels, one channel of each set haviiw a direct communication with the bore and being arranged for movement into and out of alinen'ient with the adjacent port, and another channel of each set being arranged for movement into and out of alinement with the adjacent exhaust opening in saidsecond named cylinder, during the movements of the plunger; means for normally holding the plunger at the limit of its inward movement, and an inlet-pipe having` one end con'nnunicating withthe receiver and the other end with the bore of said plunger. i

4. The combination, with a compressor and a receiver connected together, said compressor being provided with an air-inlet valve, of a regulator comprising a pair of juxtaposed cylinders having a pair of port communications with each other, one of said cylinders being formed with a pair of diametricallv-opposite inlet and exhaust openings, and the. other cylinder with pair of exhaust openings; an inlet pipe having one end iitted in the inlet opening the first named cylinder and the other end communicating with the receiver; an exhaust pipe havingr one end fitted in the exhaust opening'in said iirst named cylinder and the other end communieating with'said inlet valve, for o erating the same a valve slidable within sai first named cylinder and formed with a transverse channel movable into and out of registration with ltm said openings during the movements of the said remaining hannels of each set bein aroeiver and the other end with the bore of said i0 ranged for movementinto and out of a inelplunger. ment with said adjacent port, and the other In testimony whereof, I affix my signature, remaining chanel wil the ajacntdexhust in presence of two witnesses.

5 o enm m sai seconv name c 1n er, ur- A 'y iig the? movements of the pluliger; means l GEORGE W' HU-NNEYMAN for normally holding the plunger at the limit i Witnesses; of its inward movement; and an inlet-pipe CHAS. T. PAGE, having one end communicating with' the re- WILBUR J. PAGE. Y 

